
The AirTAC Airtac PEB T-Shaped Straight Thread Tee Connector PEB4M5-S is a genuine male branch tee for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
The PEB4M5-S is an AirTAC PEB male branch tee in the SUS304 stud variant. It screws an M5x0.8 male thread into a port and splits the supply into two Dia 4 mm one-touch tube lines, so a single feed can drive two small actuators or one actuator plus a signal line. Connection is push-to-connect: push the tube home until it bottoms, the chuck grips it against the stainless spring gasket, and pressing the POM release button frees it again.
Because this code carries the -S suffix, the threaded stud is SUS304 stainless steel while the tee body stays PBT - this is not a solid stainless fitting. Ratings are identical to the standard resin line: working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum down to -750 mmHg (10 Torr), proof pressure 1.5 MPa and a temperature window of -20 to +70 C. Unlike the larger threaded parts that arrive with sealant, the M5 size seals with a gasket on the thread face, so no thread tape is needed on the port.
| Model | Airtac PEB T-Shaped Straight Thread Tee Connector PEB4M5-S |
|---|---|
| Type | Male branch tee |
| Series | PEB |
| Connection | Push-in one-touch |
| Body material | Stainless steel 304 (-S variant) |
| Working pressure | 0 - 1.0 MPa (0 - 10 kgf/cm2) |
|---|---|
| Negative pressure | -750 mmHg (10 Torr) |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Applicable tubing | Soft nylon or polyurethane tube |
| Thread standard | PT (Rc tapered) unless the code says otherwise |
POM release button and chuck, aluminium-alloy guide, stainless spring gasket, NBR O-ring; body brass or PBT depending on the part. Stainless (-S): SUS304 in place of brass - a solid SUS304 body on the PC and POC straight connectors, and a PBT body with a SUS304 stud on the elbow, tee and branch shapes. Working pressure, proof pressure and temperature are unchanged from the standard version. AirTAC publishes flow as a characteristic curve rather than a single figure, so no L/min value is listed.
| PEB | Male branch tee. |
|---|---|
| 4 / 6 / 8 / 10 / 12 | Tube outside diameter in mm (3.2 mm exists on the mini series). |
| M5 / 01 / 02 / 03 / 04 | Thread: M5x0.8, 1/8", 1/4", 3/8", 1/2" (M3 on the mini series). |
| D | Black. Blank = grey. |
| -S | Stainless-steel body. |
On a small SCARA pick-and-place head, an M5 vacuum port from the ejector can be split to two suction cups using this tee, with 4 mm polyurethane tube routing around the wrist where every gram and millimetre counts.
In a laboratory gas analyser or sample-handling rig, the SUS304 stud resists corrosion from occasional condensation or mild reagent splash while the PBT body keeps the fitting light and non-conductive near sensors.
A compact valve manifold with M5 ports can feed both an air flag indicator and a small pilot actuator from one port, replacing two separate connectors and a threaded junction in a crowded backplane.
Dia 4 mm is the smallest tube this fitting is made in on the M5 row, so there is no step down - the only neighbour is PEB6M5-S at Dia 6 mm, which buys a slightly larger bore for shorter fill times on a marginally longer run. If you need Dia 8 or Dia 10 tube, you must step the thread up to PEB401 (1/8 in), which opens those tube sizes on the same branch-tee shape. Whatever you choose, the tube OD must match exactly: a Dia 4 mm chuck will not seal on 5/32 in or 1/4 in tube, even though the difference looks trivial on a ruler.
Match the M5 thread to the actual port - M5x0.8 is the fine thread found on compact valve and cylinder ports, and it seals by gasket, not by winding. If the port is a tapered 1/8 in PT boss, order PEB401-S instead.
Quick checklist
Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure down to -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. It joins Dia 4 mm soft nylon or polyurethane tube on two legs with an M5x0.8 male thread (PT thread standard, sealed by gasket on the M5 size). The -S variant has a SUS304 stainless stud and a PBT body; all pressure and temperature figures are the same as the standard PEB4M5.
No. On the PEB branch-tee family the -S suffix means only the threaded stud is SUS304; the tee body remains PBT with a POM release button and NBR O-ring. If you need a fully stainless body, the -S suffix does that only on the PC and POC straight connectors. Do not re-rate this part either - it carries the same 0-1.0 MPa and -20 to +70 C limits as the standard version.
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